Pebbles Sand Silt Geologist. How do these pebbles turn into sand???

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Presentation transcript:

Pebbles Sand Silt Geologist

How do these pebbles turn into sand???

gravel Silt cobbles clay boulder pebbles sand Clay Silt Sand Gravel Pebbles Cobbles Boulders

ClaySiltSandGravelPebbles CobblesBoulders Which of these is the size of dust ? It is the smallest rock you have studiedCLAY Pieces of rock that are the size of dust

Collection

reddish bubbly rock. Once the top of the lava Scoria-

light, soft, smooth rock that comes from the ashes of the volcano Tuff-

grey rock that was once hot liquid lava Basalt

chalky rocks

siltsand humus = dead plant materials These earth materials make_______ soil.